V6 20 0 - Erpnext — ContextQMD

Added new Employee Attendance Tool, to manage attendace in bulk.
In Profit and Loss Statement and Cash Flow repots, accumulated periodic balance is not optional based on filters
Removed Is Service Item from Item, all sales items are available for service.
Now Sales Person Group can be selected in a sales transaction. All the activities made by the children of any group, will also be considered as it's own activity.